... You might have heard about a couple of big movies about asteroids which are heading towards the cinemas this summer. ... I'm not going to take sides about which movie is the best but having seen the trailers I was prompted to try and produce a more accurate image of what an asteroid impact might look like. The trailer for 'Deep Impact' shows a very impressive impact, presumably using the latest, cutting edge Hollywood special effects. ... Part 1 - The Asteroid . ... Comet fly past (1.8M mpeg) . ...